package filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

@WebFilter("/admin/*")
public class PowerFilter implements Filter {

	@Override
	public void destroy() {

	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		
		HttpServletRequest req = (HttpServletRequest) request;
		HttpServletResponse resp = (HttpServletResponse) response;
		
		
		HttpSession session =  req.getSession();
		Object _loginUser = session.getAttribute("loginUser");
		if(_loginUser!=null) {
			chain.doFilter(request, response);
		}else {
			resp.sendRedirect("/demo/login.jsp");
		}

	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {

	}

}
